Mike Maddison, head of security and resilience at Deloitte, said: "Cyber risk is a major concern for businesses of all sizes, across all sectors and CISOs are under increasing pressure from boards to protect against evolving cyber threats. But the monitoring, analysis and response capabilities needed to keep businesses safe are often expensive overheads which can be difficult to manage.

"Since we can perform this service for several clients at once, we can also make it cost-effective. Companies are under pressure to do more with less and the Cyber Intelligence Centre allows them to take advantage of Deloitte's scale."

Deloitte said that it had been working with clients to develop the centre - the first of its kind, it claimed - for over 18 months.

It is part of a global investment in cyber security at the company, following the purchase of US firm Vigilant in May, and the opening of the Deloitte CyberSOC centre in Spain, which provides global support to Deloitte's clients.